Dr. Deirdre Barrett, a teacher and a Clinical and Evolutionary Psychologist at Harvard Medical School, said that dogs likely dreaming about their owners.

She says that while there’s no way to know for sure what dogs are seeing when they dream, it’s safe to assume that their dreams draw from everyday experiences, like humans.

“Humans dream about the same things they’re interested in by day, though more visually and less logically,” Barrett said. “There’s no reason to think animals are any different. Since dogs are generally extremely attached to their human owners, it’s likely your dog is dreaming of your face, your smell and of pleasing or annoying you.”

But what about cats? According to Barrett, past research shows that cats likely dream about “hunting mice in their dreams.”

Barrett also confirmed that dogs are likely acting out their dreams when their legs move in running motion in their sleep.

She also offered advice to pet owners who want to make sure their friend’s dreams are sweet.

“The best way to give ourselves or our children better dreams is to have happy daytime experiences and to get plenty of sleep in a safe and comfortable environment. It’s a good bet this is also best for pets’ dreams.”